| Quellcodebibliothek Statistik Leitseite products/Sources/formale Sprachen/C/Firefox/testing/web-platform/tests/element-timing/ (Browser von der Mozilla Stiftung Version 136.0.1©) Datei vom 10.2.2025 mit Größe 1 kB |
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Quelle toJSON.html Sprache: HTML |
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<!DOCTYPE HTML> <meta charset=utf-8> <title>Element Timing: toJSON</title> <body> <script src="/resources/testharness.js"></script> <script src="/resources/testharnessreport.js"></script> <script src="resources/element-timing-helpers.js"></script> <img elementtiming='img' src="resources/square100.png"/> <script> async_test(function (t) { assert_implements(window.PerformanceElementTiming, "PerformanceElementTiming is n const observer = new PerformanceObserver( t.step_func_done(function(entryList) { assert_equals(entryList.getEntries().length, 1); const entry = entryList.getEntries()[0]; assert_equals(typeof(entry.toJSON), 'function'); const json = entry.toJSON(); assert_equals(typeof(json), 'object'); const keys = [ // PerformanceEntry 'name', 'entryType', 'startTime', 'duration', // PerformanceElementTiming 'renderTime', 'loadTime', 'intersectionRect', 'identifier', 'naturalWidth', 'naturalHeight', 'id', 'url', ]; for (const key of keys) { assert_equals(json[key], entry[key], 'PerformanceElementTiming ${key} entry does not match its toJSON value'); } assert_equals(json['element'], undefined, 'toJSON should not include element'); }) ); observer.observe({type: 'element', buffered: true}); }, 'Test toJSON() in PerformanceElementTiming.'); </script> </body>
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2026-04-02